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K<sub>2</sub>O·CaO·P<sub>2</sub>O<sub>5</sub>계 유리의 열적특성과 구조분석
윤영진,윤태민,이용수,강원호,Yoon, Young-Jin,Yoon, Tae-Min,Lee, Yong-Soo,Kang, Won-Ho 한국세라믹학회 2002 한국세라믹학회지 Vol.39 No.2
$K_2O{\cdot}CaO{\cdot}P_2O_5$를 기본조성으로 하여 용융법에 의해 유리 형성범위를 정의하고자 하였다. TG-DTA와 DSC를 이용하여 열적 특성을 관찰하고자 하였으며, FT-IR과 Raman Spectroscopy를 이용하여 구조를 분석하였다. $K_2O{\cdot}CaO{\cdot}P_2O_5$의 함량이 증가함에 따라 유리전이온도 및 연화온도는 감소하였다. $K_2O{\cdot}CaO{\cdot}P_2O_5$ 유리의 기본 구조는 이웃한 구조와 상호 결합을 위한 $PO_2$와 $PO_4^{3-}$ 구조와 유리의 골격구조를 이루는 P-O-P 결합이며, CaO의 함량이 증가함에 따라, 유리내의 P-O-P의 결합력은 점차적으로 증가하였으며, $PO_2$와 $PO_4^{3-}$의 intensity는 점차적으로 감소하였다. Various composition of $K_2O{\cdot}CaO{\cdot}P_2O_5$ glasses were studied by melting process to identify glass forming region. Thermal properties were observed by DSC and TG-DTA, structural properties were investigated by FT-IR and Raman Spectroscopy. The glass transition temperature (Tg) and softening temperature (Ts) were decreased with increasing $K_2O\;and\;P_2O_5$ contents. The basic structural unit of phosphate glasses is the $PO_2\;and\;PO_4^{3-}$ groups to make a cross-link and P-O-P group to form skeleton structure. As CaO content was increased, the P-O-P field strength in these glass was increased and intensity of $PO_2\;and\;PO_4^{3-}$ stretch was decreased.
윤영진 ( Young Jin Yun ),이진무 ( Jin Moo Lee ),이창훈 ( Chang Hoon Lee ),장준복 ( Jun Bock Jang ),이경섭 ( Kyung Sub Lee ) 대한한방부인과학회 2012 大韓韓方婦人科學會誌 Vol.25 No.2
Objectives: This study was conducted to evaluate the inhibitory effect of Melia Fructus extract on osteoclast differentiation. Methods: MTT-assay was performed to estimate cytotoxicity of Melia Fructus extract in BMMs stimulated with M-CSF. TRAP staining, TRAP activity and Real-time PCR were performed to know the inhibitory effect on osteoclast differentiation. Actin ring formation were analysed to observe the effect of Melia Fructus extract. Results: Melia Fructus extract decreased the number of TRAP positive cells and the expression of NFATc1 gene, c-Fos gene, TRAP and OSCAR in BMMs stimulated with RANKL. Melia Fructus extract has no cytotoxicity at the concentration used in this study. Melia Fructus extract restrained the formation of actin ring. Melia Fructus inhibited NF-κB activity by inducing degradation of p-IkBα. Conclusions: Melia Fructus has the inhibitory effect of osteocalst differentiation and bone resorption. Further studies are needed to treat osteoporosis by herbal medicine containing Melia Fructus.
윤영진 ( Yoon,Young - Jin ) 한국행정학회 1993 韓國行政學報 Vol.27 No.3
최근 지방재정확충방안으로서 제3섹터를 통한 민간자원의 활용방법이 관심의 대상이 되고 있다. 그것은 자체재원의 확대방법과 중앙과 지방간의 재정조정방법이 지방재정의 확충방법으로서 한계를 노정하고 있기 때문이다. 제3섹터 개념은 미국과 일본간에 용례가 약간 다른데 우리나라는3섹터를 추진하는 과정에서 주로 일본의 제3섹터 모형을 원용하고 있다. 본 논문은 제3섹터의 개념에 대한 검토 성립배경 및 우리나라의 제3섹터의 현황을 고찰하고, 지방재정확충방안으로서의 제3섹터의 설립모형을 모색하였다. 제3섹터의 설립모형은 설립준비단계에서 필요성과 실현가능성, 설립단계에서 설립주체, 참여정도, 대상사업, 조직형태를 살펴보고, 마지막으로 제약조건과 성공조건을 고찰하였다.
윤영진,김우택,이준원,안성균,안민수,김장영,유병수,이승환,윤정한,최경훈 대한심장학회 2011 Korean Circulation Journal Vol.41 No.12
Background and Objectives: Radial artery spasm is one of the most common complications of transradial coronary angiography (TRA): the radial artery is prone to cathecholamine-induced contraction and radial pain during TRA could increase the sympathetic tone. The object of this study was to evaluate whether the eutectic mixture of local anesthesia (EMLA) cream, in addition to lidocaine infiltration, could reduce the sympathetic response by reducing radial pain during TRA. Subjects and Methods: Seventy-six patients were randomized 1 : 1 to either EMLA or control groups. Radial pain was measured by the visual analogue scale (VAS) and the verbal rating scale (VRS-4). Sympathetic response, including systolic (SBP) and diastolic blood pressure (DBP), pulse rate (PR), stroke volume (SV) and total peripheral resistance (TPR), was measured by photoplethysmography. Results: Radial pain measured during lidocaine infiltration was significantly lower in the EMLA group (VAS: 3.1 vs. 4.0, p=0.04; VRS-4: 2.0 vs. 2.2, p=0.03) and the sympathetic response was significantly blunted in the EMLA group from baseline to lidocaine infiltration (ΔSBP, mm Hg: 5 vs. 13, p<0.01; ΔDBP, mm Hg: 2 vs. 7, p=0.03; ΔPR, beat/min: 2 vs. 8, p<0.01, ΔSV, mL: 3 vs. 21, p<0.01; ΔTPR, mm Hg · L/min: 1.0 vs. 5.9, p<0.01). Conclusion: In patients undergoing TRA, the EMLA cream, in addition to lidocaine infiltration, effectively reduces the radial pain and thereby the sympathetic response, during lidocaine infiltration.
윤영진(Yoo, Young Jin),김용진(Kim, Yong Jin) 한국서비스경영학회 2012 서비스경영학회지 Vol.13 No.4
As the market environment is changing rapidly, companies have prepared a variety of programs for effective response to the changes. In particular, companies have focused on effective operation strategies in the areas of product plan, manufacturing, production, and sales. Accordingly, efficient allocation and strategic management of the limited resources becomes important. However, companies don`t have effective tools to implement their business strategies. Even further, in most cases, they don`t recognize the criticality of the strategic management of resources. This article addresses the questions of 1) how to identify business agenda and 2) how to implement the agenda effectively in the business context of kt which is one of the largest incumbent telecommunication companies in Korea. The war game theory has been applied as a proper method for kt to implement its strategy with the dynamic market change. KT set up a war room to operate it to identify the strategic agenda and implement them. The war room facilitates to generate strategic agenda for top management and implement key initiatives together with CXO board. It helps make sense of urgency throughout the company and measure the key indicators for both of financial and market. In addition, it facilitates the discussion on the urgent topics which the company faces at the moment and helps simulate the results of decisions. Using the war room has been found to be very practical to manage strategic agenda and to provide key market insights to top managements.